Some examples of anodized titanium jewelry for your piercings. It is anodized to this gold / bronze look for people who like gold color look.
Anodizing titanium is a process that adjusts the oxide level of metal surfaces. This adjustment changes the spectrum of light, resulting in perceived color. By precisely controlling the surface oxide level, an entire range of colors can be produced. Anodizing titanium is not a coating, nor does it use dyes.